Integrating mechanism.



E. H. MESSITER.

INTEGRATING MECHANISM. APPLICATION FILED FEB. 19. 1910.

I 1,174,337. Patented Mar. 7,1916.

3 SHEETS-SHEET I.

INVENTOR W BY' A I 9% aATiORNl-M E. H. MESSITER.

INTEGRATING MECHANISM.

APPLICATION FILED FEB. I9. 1910.

3 SHEETS-SHEET 2.

LQ Q Q I i w i I l & A i. I I v I I1: K

WITNESSES: INIIEIITOR BY fiigw z 3 a A TORNEYSC Patented Mar. 7, 1916;:

E. H. MESSITER. INTEGRATING MECHANISM. APPLICATlON FILED FEB. 19. 1910.

Patented Mar. 7,1916.

3 SHEETSSHEET 3 INVENTOR ATTORNEYS UNITED STATES PATENT OFFICE.

EDWIN H. MESSITER, or'BRooKLYN, new YORK, AssIeNoR '10 ELECTRIC wnrenmef comrm, on NEW YORK, n. Y.-, A CORPORATION on NEW YORK.

inrnena'rme MECi-IANISM.

To all whom it mag concern: t

Be it known that I, EDWIN H. MESSITER, a citizen of the. United Statesof America,

. and a resident of Brooklyn, county of Kings,

and State of New York, have invented certain new and useful'lmprovementsin Integrating Mechanism, of which the following is ,a specification,reference being bad tothe accompanying drawings, forming a part thereof.

My. invention relates to improvements, in integrating mechanism, andparticularly to means for integrating aquantitywhichis the function oftwo other quantities, one con-- stituting a time component and the othera force component, and a specific application of my invention is thecontinuous weighing of material as itris being carried by a travelingconveyerf "In continuous weighing mechanism of this character there aretwo factors to be conproduct thereof; In mypresent invention,

I measure the factors electrically in the following manner and thusdispense with much complicated mechanism, thereby not only savinginitial cost but avoiding a fruitful sourcejof errers. For the purpose Iprovide means for varying the electro-motive force in an electriccircuit proportionately to the speed at which the material moves, andmeans for varying at the same time the quantity of current in thecircuit, in proportion to the weight of the movingmaterial thisiquantitybeing also, of course, aifecte' to the proper extent by and inaccordance with the electro-motive force thereofyan d in connection withthis circuit I provide a measuring instrument for measuring the currenttherein.- As it follows that the cur-1 rent so measured in any unit oftime bears Specification of Letters Patent.

Patented Mar. 7, 1916.

Application filed February 19, 1910. Serial No. 544,782.

of weight instead of, current measurement in'order to give the requiredresults.

invention maytherefore be said to consist in proportioning an electriccurrent to the weight of a load and to the speed at which the load movesand in then measuring the current. The different parts of an apparatusfor this purpose may be substantially standard instruments. The currentmay be generated by a small generator geared or belted to run with theconveyor so that its speed is exactly proportionate to the speed oftravel of the said conveyer, and a simple form of variable resistancemeans, operated by the weight of a loaded portion of the belt, arrangedeither in shunt or'series with a currentmeasuring instru- I ment, may beused to vary the quantity. of

current permittedv to pass through the said instrument. The measuringinstrument may be a standard form of integrating amperehour meterytheregistering or recording means thereof being arranged with a suitablenotation for the purpose. Other electrical measuring instruments mayalso be' employed, for instance one or more simple 'means forcompensating for variations in' a direct relation to the weight ofthe-ma terial carried during that time, it will only be necessary toexpress the resultin'ter'ms ing reference tothe accompanying indicatingammeters located at different points will indicate at such points theload carried during units of time. If these instrume'nts be recordingones they will make charts showing the fluctuations of the load.

My invention further consists in certain the weight of different partsof the conveyor when running without load, and in certain details ofconstruction and novel combinations all as will be fully pointedoutherein after, and in order that my invention may be thoroughlyunderstood, I will now proceed to describe an embodiment thereof,havdrawings illustrating the same, and will then point out the novelfeatures in claims.

Inthe drawings: Figure 1 is a view in side elevation of acontinuousweighing 100 mechanism constructed. in accordance with my invention,showing the same applied to d an endless belt "conveyer. Fig. 2 is aview inztransverse vertical section therethrough.

Fig. 3-is a diagrammatic view, showing pafticularly a set of electriccircuits which may be employed. -Fig. 4 is a detail view showing a.preferred formfof construction'for a resistancesdevicen Fig. 5:;i's adetail (liaemployed "under some circumstances.

grammaticyiew of a circuit which may be' Fig.

" 6 is a detail View of a modified form of resistance means which may beemployed.

The drawing illustrates ,parts of an. enda less belt 'cQnv'eyerfor\carrying the material to be weighed, the portion. being preferablybent up into trouglrlike form by troughing idler pulleys 7 andconstituting the active or loaded portion of the belt, and theiportion 6being supported level by means ofv idler pulleys 8 and constituting theunloaded return portion of the belt, all as will be wellunderstoodbyreference to the draw- .ings. 'A- section of each of the belts issupported by means (if-swinging frames 9 and '10, the frame 9 supportingone or more of thejidlers 7 and theframe 10 one or more i of theidler's?8 These frames are conveniently c0nnected.bysuitable connectingelements 11,12 with scale beams 13 upon opposite sides of their pivotalsupports 14:,

and th'e said scale beams are connected at 7 their free ends through themedium of an equalizing bar .or lever 15 with another scale or beamlever 16,herein called thev fifth lever. The fifth lever isin turn conherewith.

copending application nected with a weighing sprin 17 or similardeviceand also with one en of a pivoted circuitclosing lever 18, the other endof whichcooperates with a resistance device 19. In operation the loadedportion of the. belt acts upon the system of levers to move the same inp,r0portion to the-load carried thereby, moving the circuit closinglever with respect to the resistance device to an extent proportionateto the load. The belt itself, its supports and the suspended frames,

' counterbalance each other because of their 40 connections11, 12 beingdisposed upon-the opposite sides of the centers 14 of the levers 13, butattention is called .to the 'fact that I- makeno claim hereintofthisconstructionits the same forms the subject matter of a filed upon evendate Connected to rotate at a speeddirectly proportionate to the.conveyer belt is a con.

. stant-field electric generator 20, the same be\ lug-shown as connectedwith a drive pulley- '21 engaged 'by a bight of the return run-1O of theconv'eyer belt. The generator circuit c''o'mprises twoline wires 22, 23,and one or more'measuringinstruments 24,25, 26 are arranged'therein inseries with each other. One of the instruments 24 may convenientlybeaniintegra'ting ampere-hour meter, while the,instruments 25, 26 may beindicating and'reco'rding 'ammeters respectively. The

resistance device, 19. is; also, arranged in parallel with the linewires 22, 23, thrdugh branch wires 27,28 (see'Fig. 3 theformerconnecting With; the resistance wires an a h? latter with thecircuitclosing lever 18 I The circuit closing device convenientl n prises aplurality. of wires bent backward and forward in the form of a flattenedhelix,

each pair of wires being provided with a permanently adjusted rider 29by which the amount of resistance presented by each loopmay beregulated. By this means the apparatus may be initially adjusted anderrors due vto friction of moving parts,

variations of springs, errors in leverage, er

rors'inthe measuring instruments, etc., provided for. in the initialadjustment the belt may be first run free-and the resistance adjustedfor a neutral condition, in which condition such an amount of currentwill be allowed to pass through the resistance device as tosubstantially short circuit the measuring instruments, standardWeightsbeing then applied to the belt, and the riders ad usted for thesuccessive resistance loops so that a part of the current is caused tbpass through the measuring instruments in proportion to such weights.Thereafter when the belt is running under normal conditions the l0adcarried will be related to the resistance thrown into the line 22, 23,and the speed of the generator being propor tionate-lto the speed ofmovement of theto wear and other causes, it will follow t at sometimes,when the belt is being'r'uni e,

the return portion of. thejbelt will be actually heavier than the partordinarily em ployed as the active or loaded part, and unless some meansbe provided for taking care of this, condition an error in reading-willmeans for reversing the direction of the cur-' rent through. themeasuring instrument or fact that the different result. To provide forthis I may employ instruments after the circuit olosing lever 28 hasreached its normal unloaded rest position. Such a means is 'shown inFig. 5,

in which 32, 33 and 84.indicate independent circuit closers carried bythelever l8,'the

elements32 and 33 arrangedito blose cir-' cuits through terminalsconnected in such a .way with the line as to constitute 'pole o means,while the element 34closes through the resistance means 19 :upon both.sides of a neutral point. ;When the lever 18 passes its neutral point,th e current 125.

changin olrcuit through theinstrument 24 Willbe reversed and the samewill be caused to run backward, such movementi. taking place when theupper part of. the belt is lighter than the ileiwer page; this willagain be compensated out the length thereof.-

Because of the fact thattlleconductivity of metal varies under changesof tempera ture it will follow thatthe resistance thrown into the lineby the movement ofthe circuit closer 18 wouldvary under changes oftemperature unless some means were provided to compensate forthis-variation in conduc-' tivity. As a simple means for suchcompensation I take advantage of the fact that the conductivity ofdifferent metals varies considerably under the same conditions,forinstance, the co-efiicient of resistance of copper is about .004 foreach rise of one degree centigrade of temperature while the coefii cientof German silver is about one-tenth thereof or .0004. Having this inmind, I-

employ resistance means 30, 31 in the loops through and around themeasuring instruments, having difl'erent coeflicients of resist--circuit, the said current having an electro motive force proportioned t0the speed of operation of the load conveying means,-

means controlled by the weight of the load being conveyed for varyingthe current in the said circuit,-and an electric meter for the saidcircuit. p

. 2. Continuous weighing mechanism comprising a conveyer, weighing meansover which the conveyer is arranged to pass, an electric circuit, anelectric quantity meter therein, and means including a variableresistance device controlled by the said weighing means for varying theamount of cur- .rent in the said circuit proportionately to the varyingmovements of the weighing mechanism as the conveyer passes thereover.

3. Continuous weighing mechanism comprising a. conveyer, weighing meansover which the conveyer is arranged to pass, an electric circuit, anampere hour meter therein, and means including a variable resistancedevice controlled by the said weighing means for varying the amount ofcurrent in the said circuit proportionately to the varying. movements ofthe Weighing 'mechanism as the conveyer passes thereover.

ance, the amount of material being used in the two loops having therequired relation to their temperature coefiicients of resistance,whereby under rises of temperature the resistance upon the two sideswillbe varied proportionately and a substantially uniform difi'erentialmaintained. The amount of resistance thrown in through 'the devicemeasured as it passes the given point for 19 will be smallproportionately to the resistance as azwhole, and therefore, while therestill be a slight error by reason of the variation therein, this errorwill be largely receptacle 35, the same being arranged in series withthe measuring instrument or instruments. In thiscase the increase ofload will increase the pressure upon the carbon and thereby decrease theresistance therethrough, the result of which will be to inof travelingconveyer to which my invention may be applied.

What I claim is: 1. Continuous weighing'mechanism comprising means forcontinuously conveying a load, an electric circuit, means operativelyrelated to the; conveying means for continuously supplying an electriccurrent to said- 4. Continuous weighing mechanism c o1nprising means forconveying a load past a given point, an electric circuit,-an integrat-1ng ampere hour meter therein, a resistance device for controlling theamount of current permitted to pass through the said;

integrating ampere hour meter, and means operated by the weight of theload to be the load conveying means for also varying the current in theelectric circuit, as the speed of movement of the load conveying meansvaries, and an electric measuring device for the current in the saidcircuit.

6. Continuous weighing mechanism com prising means for conveying a load,weighing means for supporting a portion of the load conveying means, anelectric circuit,

means connected with the weighing means .for varying the current in theelectric circuit as the weight of the loadthereon varies, meansconnected in speed relation with' the load conveying means for alsovarying the current in the electric circuit, as the speed of movement ofthe load conveying means varies, and an integrating electric meterforthe current in the said circuit.

hour meter for'the c meter therein 7. Continuous weighing mechanism comprising means for convey ng a load, Weighing means for supporting a.portion of the load conveying means, an electric circuit, meansconnected with the Weighing means ries, means connected in speedrelation with the load conveying means for also varying the current inthe electric circuit, as the speed of movement of the load conveyingmeans varies, and anintegrating ampere rrent in the said cir cuit." i 8.Continuous weighing mechanism comorisin means for conve in a load weihing means for supporting a portion of the load conveying means,ail-electric circuit, an integrating ampere hour meter therein, andmeans connected with the Weighing means and in "speed relation with. theload convey-' trolli'nghe ainoii pass through 'the said "integratingampere hour meter, means operated by the Weight -of a load to bemeasured'yvhile being conyeyed, for variably -controlling"'the saidresistance device in accordance with the Variations of the ivei'ghti of.the load to be measured, and meansgfor varyingthe electro-motive' forcein "the, said, electric circuit, in accordance 'withft-he speed ofmovement of the'load'. (I:

10. Continuous Weighing'mechanism' compressureflresisting means" weightof the jload,, {a means for proportioni'ng I p w ment of the generatorto the speed of; movesaid circuit proportionately-to the weight acting.upon thesaid pressure, resisting! means, and means formeasuringthecurrent.

*the' said electrical measuring instrument,

in thesaidcircuit."

j 11.' Contii'iuous weighing mechanism com prising. means for carrying amoving load, pressure resisting means acted upon by the weight of theload, an electric generate-r, means for proportioningthefspeed-of move-'forvarying thecurren't inthe electric circuit as the weight of the loadthereon va,-'

-'ment of the generatorto the speed of move- :of current-permitted toprising means forcarryin a -moving; load,

a rmby e. i

' T ing thefdi'rection of. the current in the circu t;

ment of the load carrying meatg s anielectric 7 i, means -for varyingthe amount of CHIIGIlflIII the ment ofthe generator to-thei speedof,;move'-';

ment ofthe load carrying nealfs, an electric circuit fed ib'ythesaidgenerator, 'nieansrfor varying the' amount of current in the saidythroughthe electric circuit;

a given pom v circuit proportionately to the Weight acting upon the saidpressure resistingmeans, and an ammeter for measuring thecurrent in thesaid circuit. I

12. Continuous Weighing mechanism comv prising means for carrying amoving load, pressure resisting means acted upon by the weight of theload, an electric generator, means for proportioning the speed ofmovement of the load carrying means, an electric circuit fed by the saidgenerator,;means for varying the amount of current in the. said circuitproportionately ,to the Weight acting upon the said pressure resisting30 means, and a registering ammeter for measuring the current in thesaid circuit. I

13. Continuous Weighing mechanism comprising means for carrying a movingload, pressure resisting means acted upon by the Weight of the load, anelectric generator, means for proportioning'the speed of movement of thegenerator to the speed of move ment of theload carrying means, anelectric circuit fed by the. said generator, means for varying theamount of current in the said circuit proportionately to theaveightacting, upon the said pressure resisting means, and a recordingammeterfor measuring the current in the said circuit. I

14:. Continuous Weighing mechanism comprising an instrumentiiormeasuring electric currents a generator for the said currents, means Iorvarying the speed of the generator in proportion to the speed of.movement of the load to bemeasu'red, and mean's for varying the current1n the clrcuit by, and infaccordance With, the varying weight ofthemoving load as it passes a ',1 5.- Weighing mechanism comprising anelectric circuit, an electricalmeasuring instrument therein a variableresistance device in connection with: the said circuit, means forvarying the're'sistance in relation to the,110 load tobe measured, andmeans for reyerselectric circuit, an electrical measuring in--.

strument'formeasuring the current therei ajresistance; device for jcontrolling th amount of current permitted to pass through meansoperated by the Weightofthe load to be measured for controlling thes'aidresistance devicein accordance with the weight of the load to bemeasured, and means operated when the last saidmeans reaches avpredetermined point .fforreversing the current J 17', Weighingmechanism i lcoinprising. means-tor proportioning anelectric current 130 to the weight of a load means for reversing the current when the loadbecomes a minus {uously influenced by the material carried by theconveyer, an electric circuit, means responsive to the voltage andcurrent in the circuit for measurin the total weight of the materialconveye and meanswhereby the voltage and the current are respectivelythe aforesaid weighing means.

20. Continuous weighing mechanism comprising a conveyer, weighing meanscontinuously influenced by the load carried by a portion of thec0nveyer,an electric circuit, means responsive to the power consumed inthe circuit for measuring the total weight of the material conveyed,and" means whereby controlled by the speed of the conveyor and theelectro-motive force and the resistance of said circuit are respectivelycontrolled by' the speed of the conveyerand the aforesaidweighing means.1 1 4 In witness whereof I havehereunto set 1 my hand this 15th day ofFebruar 1 p Witnesses: a D. HOWARD HAYWOOD,

LrMAN S. Ammnws, Jr,

EDWIN H. MES'SITER;

